Apparatus for drying sleeves



Sept. 8, 1931. c. MAJER APPARATUS FOR DRYING SLEEVES Filed May 22, 192

Patented Sept. 8, 1931 PATENT OFFICE CHRISTIAN MAJ ER, OF TUBINGEN, GERMANY APPARATUS FOR DRYING SLEEVES Application filed May 22, 1928, Serial No. 279,806, and in Germany May 28, 1927.

This invention relates to an apparatus for drying sleeves of paper or cardboard.

The paperor cardboard-sleeves being wound and glued in the automatic sleeve i winding machines were hitherto conveyed in wet state, by means of wire sieves on trucks into drying chambers, this being troublesome and requires much time. Sleeve winding machines have further become known in which drying apparatus are built, the sleeves being conducted for drying onto a partly heated box, especially the conical sleeves being, after the drying, inserted the one into the other automatically to form long rods. These drying apparatus with chain-conveying present the serious inconvenience that the chains are submitted in the heated rooms to such considerable wear and stretched so a that disturbances, owing to inaccurate feed ing, especially at the inserting of the conical sleeves the one into the other, happen easily. Such a chain dryer requires further a rather high driving power and much space, so that such a drying apparatus can be built into the sleeve winding machine only when this machine is mounted in very high rooms.

The invention has for its object to avoid this inconvenience in giving to the sleeve dryer the form of a ring-shaped casing to be an heated with hot air. in which the paper sleeves are dried by being positively moved in the same. In the ring-shaped casing rings are rotatably arranged which carry chambers or 3B the like designed to receive the sleeves of chambers form a whole with the rings, so that warping or stretching cannot occur in the drying casing, no alteration of the distance which the sleeves are spaced being possible. The ring system is freely mounted on rollers and preferably rotated by means of gear wheels so that an easy running is obtained and the apparatus can be driven with much less power than the commonly used chain conveyers.

A further advantage is that a drying apparatus can be easily composed of several single elements arranged the one behind the other or in any other suitable manner, this being very important with regard to space.

paper or cardboard to be dried. The sleeve- The temperature of the several elements can be preferably increased from one element to the other so that perfect drying of the sleeves is ensured.

An embodiment of the invention is illusit trated, by way of example, in the accompanying drawings in which Fig. 1 shows a ring-shaped drying apparatus for sleeves in front elevation partly in section in which the sleeve chambers are arranged at the outer side of the guide walls, the bearings and driving mechanism being arranged on the inner side of the guide rails. Fig. 1a shows the use of pins on the outer side of the guide walls. Fig. 2 is a top plan view of Fig. 1 partly in section.

Fig. 3 shows a sleeve drier in ring shape, in

which the sleeve chambers, are arranged on inv which several radially-arranged sleeverings are united, these rings being mounted and driven as in the form of construction shown in Figs. 3 and 4. i

Fig. 6 shows a group of several drying apparatus in front elevation.

Fig. 7 is a top plan view of Fig. 6.

Fig. 8 shows diagrammatically other manners of grouping the apparatus.

Into the casing a forming the drying chamber closed by a lid 7), thering 0 comprising I the sleeve chambers is built, which is composed of the guide rails d of any desired profile and of the sleeve chambers 6 also of convenient form. The sleeve chamber ring 0 may be composed in such a manner, that the sleeve chambers e are arranged on the outer side (Figs. 1 and 2) or on the inner side of the guide rails (Z (Figs. 3 and 4). The sleeve chamber ring 0 is mounted on several rollers f over which the guide rails 03 slide. The rotation of the ring 0 is effected by means of a driven spur wheel 9 meshing with teeth h of one of the guide rails (Z. This spur wheel g may be fixed on one of the roller axles i or on a separate axle 7c. The spur wheel 9 can be driven in any convenient manner. The sleeve chamber rings are guided at the sides by a number of rollers Z arranged accordingly on the casing a so that the sleeve chamber ring 0 can run easily and without much clearance. In the end face of the casing a, apertures :10 are arranged through which the sleeves are inserted or removed.

Several sleeve rings m might be arranged radially to the main sleeve chamber ring 0, and all these rings are then. united in the casing a so that they rotate simultaneously (Fig. 5). In this case the rings a which carry the sleeve chambers e are interrupted so that the drying air has access also to the sleeve chambers situated on the inner side. When the rings n are not interrupted the h 0t air can be supplied to every single ring n.

The sleeve chambers e have each a slot 0 extending over its entire length and designed to guide the sleeve ejectors 7?. In order to ensure a good circulation of the hot air, pressed into the sleeve chambers 6, these chambers have interruptions g.

In the casing a one or several apertures 1 are arranged to which air nozzles s are connected for forcing hot air into the chambers e or for sucking the air from said chambers. Instead of the chambers 6 pins 25 or the like might be fixed on the rings at designed to carry the sleeves to be dried.

The sleeve chamber ring 0 rotates periodically in the casing a. After every ejection or introduction of a sleeve the sleeve chamber ring 0 is advanced the distance between two chambers. The sleeve chamber ring 0 may however rotate continually. The casing a and the lid 6 are preferably made of insulating material, this being however not absolutely necessary. Instead of making the easing a and the lid 6 of insulating material, the walls might be lined on the inner surface with a heat insulating material.

The driven shaft 76 on which the rollers run freely carries clutches '1; by means of which the different elements may be engaged or disengaged at will (Fig. 7). Or the motion is transmitted from element to element by means of suitably arranged clutches to (Fig. 8)

A sleeve-dryer in ring form as above described permits of practically grouping sev eral elements (Figs. 6. 7 and 8) so that a great number of such apparatus may be accommodated in a comparatively small room.

In order to economize space, a ring-shaped sleeve dryer might be coupled with a com monly used chain dryer, the latter serving for conveying the sleeves from the sleevewinding machine to the ring-shaped dryer.

The sleeve might be inserted into the ring dryer by hand or automatically to be per fectly dried in the same. The ring-shaped dryer may be arranged Vertically or horizontally.

I claim 1. A sleeve dryer, comprising in combination a ring shaped casing, rings of any con venient cross-section in said casing, means for rotating said rings, chambers of perforated material fixed on said rings adapted to receive and to deliver the paper sleeves to be dried, and nozzles for forcing hot air into and sucking off consumed air from said casing.

2. A sleeve dryer, comprising in combination a ring-shaped casing, rings of any convenient profile in said casing, means for rotating said rings, chambers of perforated material fixed on said rings adapted to receive and to deliver the paper sleeves to be dried, rollers carrying said ring system, and a toothed wheel gear for periodically rotating said ring system.

In testimony whereof I affix my signature.

CHE. MAJER. 

